Damper-operating mechanism



- Nov. 30, 1926. 1,608,937 v P. P. HENSHALL DAMPER OPERATING MECHANISMFiled Feb. 25, 1925 IN VEN TOR.

momma Patented Nov. 30, 1926.

UNITE STATES PATENT ()FFICE.

PERCIVAL "R I-IENSI-IALL, GE ATLANTIC CITY, NE'W JERSEY, ASSIGNOE TOJOHN J. NESBI'IT, INC., 0F ATLANTIC CITY, NEW JERSEY, A CORPORATION OF.NEW JERSEY.

DAMPER-OPERATING MECHANISM.

Application filed February 25, 1925.

This invention relates to damper control mechanism for ventilating unitsand the like and more particularly to a novel and improved means foradjusting the position of the damper within the said unit whereby theair may pass through the heating chamber or the bypass chamber orpartially through both the by-pass and heating chambers.

One of the objects of my invention resides in the construction of amanually controlled mechanism for regulating and adjusting the damper ofa ventilating unit from the end of the cabinet or casing whereby accessmay be readily gained to the interior of the ventilating unit andparticularly to the motor board, radiator and inner compartments withoutdisassembling the damper control mechanism.

A further object of my invention resices in the provision of a controlmechanism for hingedly connected dampers located within the cabinet orcasing of a ventilating unit and operable from one end thereof as distinguished from those devices extending through the front of the cabinetor casing, including rotatable means for actuating the said damperwhereby it may be set to any desired position between two extremes topermit the air to pass through the bypass chamber or heating chamber orpartially through the by-pass chamber and heating chambers.

Another object of my invention is to provide a manually operable disklocated within the cabinet or casing of a ventilating unit, said diskbeing operable through a shaft and from the end of the said cabinet orcasing and constructed and arranged for cooperation with the damperwhereby said damper may be moved in the path of the arc of a circle orset at any position between two extremes to regulate the passage of airinto the by-pass chamber, the heating chamber or partially through thebypass and heating chambers.

In order to more fully appreciate and understand my invention, referenceis had to the accompanying drawing wherein:

Fig. 1 is a vertical sectional view through the cabinetor casing of aventilating unit showing the application of my invention.

Fig. 2 is a front view, a portion of the cabinet or casing being shownbroken away.

Fig. 3 is an enlarged view showing the Serial No. 11,619.

relation of the disk control with the hinged damper.

Referring now to the drawings wherein like reference charactersdesignate corresponding parts throughout the several views, designatesthe front wall and 6 the rear wall of a cabinet or casing of a heatingand ventilating unit. The interior of the cabinet or casing is dividedto provide a blower chamber 7, preferably in the bottom, a heatingchamber 8 and a bypass chamber 9, in the top, said last mentionedchambers being separated by a partition or wall 9. The lioor 10 of theheating chamber is bent or struck up as indicated at 11 so as to providea stop for the bottom of a damper 12, said damper being usually hingedlyconnected as at 13 to the partition or wall 9 above referred to. Thedamper may thus swing in the path of the are of a circle between thefront wall of the cabinet or casing and the struck up portion of thefloor 10 so as to control the upward passage of air to the bypasschamber, heating chamber or to both the by-pass and heating chambers.

It has been the practice heretofore of adjusting the damper of theheating and ventilating units by various means located at the front ofthe cabinet or casing. This practice has always been found to be object-ionable for the reason that it is frequently necessary to gainaccess to the radiator, motor board, by-pass or heating chamber, inwhich instance it has been necessary to first disassemble the dampercontrol mechanism. In order to overcome this objection and at the sametime produce an eiticient damper control and operating mechanism, I haveprovided an operating shaft 1 1: supported by suitable hangers 15, 16connected to the partition or wall, said hangers being spaced andlocated substantially intermediate the end walls of the cabinet orcasing. The lower ends of the hangers are provided with bushings 17 forthe shaft and the ends of said shaft are also mounted in suitablebushings 18 as shown by Fig. 2 of the drawing. An operating handle 19located at one end or wall of the casing permits of the rotation of theshaft for the proper operation and control of the damper in the mannernow to be described.

An enlarged disk 20 having a bushing 21 is mounted or keyed to the shaftbetween the lower ends of the hangers, said disk being operable througha slot '22- of the damper 12. A bracket 23 is riveted or secured to thedamper and retains a pin 2st, one end of the said pin extending througha spiral slot 25 in the body of the operating disk 20, as shown by Fig.3 of the drawing. The spiral slot extends from a point adja: cent thedisk bushing to a point near the periphery of the disk and thus permitsof the adjustment or actuation of the damper between the front wall ofthe cabinet or casing and the struck up portion 11, It will thus be seenthat as the operating shaft and the disk carried thereby is rotated bythe handle, the connecting pin attached to the damper will move throughthe spiral slot and consequently the damper will be actuated in the pathof the arc of a circle and thus control the passage leading to thelay-pass and heating chambers. The connecting pin prevents the relativemovement of the disk and damper so that when the shaft is rotated by thehandle, the damper may be set at any position between one two extremesto regulate the flow of air into the respective chambers.

Having shown and described my invention what I now claim as new anddesire to secure by Letters Patent is 1. Means for regulating andcontrolling the air circulation within an enclosed ca ing comprising ashaft mounted vi hin the casing, a disk mounted on rotatable with theshaft, a damper pivoted to the casing and means connecting the di anddamper for movement of the latter to set the casing, a. slotted diskkeyed to the shaft, a slotted damper hinged within the cats ing formovement relative to an air passage therein and a connecting pin forsaid disk and dam er whereby the latter may be actuated upon therotation of the shaft .to open or close or partially open the said airpassage.

4-. Means for regulating and controlling the air circulation within anenclosed casing comprising a shaft mounted within the casing, a diskhaving a spiral slot keyed to ant rotatable with the shaft, a slotteddamper hr ged tn the said casing at a point above an interior airpassage, pin connecting the damper 'ith the spiral slot of the disk andmeans for rotating said shaft whereby the damper may be set topredetermined positions to control the air passage,

5. Means for regulating and controlling the air circulation within anenclosed casing comprising a shaft, hangers connected within theinterior of the casing for supporting said shaft intermediate its ends,a disk having spiral slot keyed to the shaft and between the hangers, adamper hinged to the casing above an interior air passage, a bracketconnected to the damper, a pin *arried by said bracket, one end of thepin .rrtending into the spiral slot and a handle exteriorly of thecasing for actuating said shaft whereby the damper :may be set :toletermined positions relative to the air .s age to control thecirculation of air ierethrough.

iii leans for regulating and controlling the air circulation within anenclosed casture.

PERCIVAL HEN SHALL.

